23. This is one of these galaxies, UDF 423. It's 10 billion light years away. Do you know what this means? Its light takes 10 billion years to reach the Earth. Basically, by looking at this galaxy you are looking 10 billion years into the past!

25. But it's not all roses out there. Here is a black hole compared to our orbit. A black hole is a region of spacetime where gravity is so strong that no particle or light ray entering that region can ever escape from it.

“When I look up at the night sky, and I know that, yes, we are part of this Universe, we are in this Universe, but perhaps more important than both of those facts is that the Universe is in us. When I reflect on that fact, I look up — many people feel small, ’cause they’re small and the Universe is big, but I feel big, because my atoms came from those stars.” — Dr. Neil DeGrasse Tyson, astrophysicist